Software/Java8/GrovePi-pi4j/src/main/java/org/iot/raspberry/grovepi/pi4j/IO.java
package org.iot.raspberry.grovepi.pi4j;

import com.pi4j.io.i2c.I2CDevice;
import java.io.IOException;
import java.util.Arrays;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.iot.raspberry.grovepi.GroveIO;

public class IO implements GroveIO {

  private final I2CDevice device;

  public IO(I2CDevice device) {
    this.device = device;
  }

  @Override
  public void write(int... command) throws IOException {
    byte[] buffer = new byte[command.length];
    for (int i = 0; i < command.length; i++) {
      buffer[i] = (byte) command[i];
    }
    Logger.getLogger("GrovePi").log(Level.INFO, "[Pi4J IO write]{0}", Arrays.toString(buffer));
    device.write(buffer, 0, command.length);
  }

  @Override
  public int read() throws IOException {
    final int read = device.read();
    Logger.getLogger("GrovePi").log(Level.INFO, "[Pi4J IO read]{0}", read);
    return read;
  }

  @Override
  public byte[] read(byte[] buffer) throws IOException {
    device.read(buffer, 0, buffer.length);
    Logger.getLogger("GrovePi").log(Level.INFO, "[Pi4J IO read]{0}", Arrays.toString(buffer));
    return buffer;
  }

}
